Answer to Question #232376 in Physical Chemistry for shin

Question

Calcium carbide, CaC₂, is manufactured by reducing lime with carbon at high temperature. (The carbide is used in turn to make acetylene, an industrially important organic chemical.)

CaO(s)+3C(s)→CaC

2

(s)+CO(g)

CaO(s)+3C(s)→CaC2(s)+CO(g)   ΔH=464.8kJ

ΔH=464.8kJ 

Calculate the quantity of energy, in kJ, transferred when 0.432 mol carbon reacts with CaO(s). 

Answer 1

Molar mass of Carbon = 12.011

0.432 × 12.011 = 5.19

Molar mass of CaO = 56.1

464.8× 61.289

= 28.487 Kj